lysozyme

(noun)

A bacteriolytic (or antibiotic) enzyme found in many animal secretions and in egg white.

Related Terms

  • microbiota
  • conjunctiva
  • lachrymal gland
  • sequencing
  • flora

(noun)

enzyme that damages bacterial cell wall.

Related Terms

  • microbiota
  • conjunctiva
  • lachrymal gland
  • sequencing
  • flora

Examples of lysozyme in the following topics:

  • Normal Eye Microbiota

    • Tears contain bactericides such as lysozyme, so that microorganisms have difficulty in surviving the lysozyme and settling on the epithelial surfaces.
  • Peptidoglycan Synthesis and Cell Division

    • That is why the cell wall of Archaea is insensitive to lysozyme.
    • That is why the cell wall of Archaea is insensitive to lysozymes, which are present in human sweat and tears as part of innate immunity.
  • Innate Resistance

    • Enzymes such as lysozyme and phospholipase A2 in saliva, tears, and breast milk are also antibacterials.
    • Tears contain bactericides such as lysozyme, so that microorganisms have difficulty in surviving the lysozyme and settling on the epithelial surfaces.
  • Macrophages

    • Macrophages can be identified by specific expression of a number of proteins including CD14, CD40, CD11b, F4/80(mice)/EMR1(human), lysozyme M, MAC-1/MAC-3 and CD68.
  • Diverse Cell Forms of Methanogens

    • These differences makes these archaea resistant to the enzyme, lysozyme, which only breaks down β (1,4) sugar linkages like those found in peptidoglycan.
  • Natural Passive Immunity

    • In addition to the IgA and IgG, human milk also contains: oligosaccharides and mucins that adhere to bacteria and viruses to interfere with their attachment to host cells; lactoferrin to bind iron and make it unavailable to most bacteria; B12 binding protein to deprive bacteria of needed vitamin B12; bifidus factor that promotes the growth of Lactobacillus bifidus, normal flora in the gastrointestinal tract of infants that crowds out harmful bacteria; fibronectin that increases the antimicrobial activity of macrophages and helps repair tissue damage from infection in the gastrointestinal tract; gamma-interferon, a cytokine that enhances the activity of certain immune cells; hormones and growth factors that stimulate the baby's gastrointestinal tract to mature faster and be less susceptible to infection; and lysozyme to break down peptidoglycan in bacterial cell walls.
  • Phage Display

    • The new phages produce lysozyme that ruptures the cell wall of the host, leading to the release of the new phages, each ready to invade other bacterial cells.
  • Virulent Bacteriophages and T4

    • The lysozyme domain of GP5 is activated and degrades the periplasmic peptidoglycan layer.
  • Firmicutes

    • The spore is sometimes surrounded by a thin covering known as the exosporium, which overlies the spore coat, which acts like a sieve that excludes large toxic molecules like lysozyme, is resistant to many toxic molecules and may also contain enzymes that are involved in germination.
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